Gun-lock



(Model) 2 Shets-Sheet '1. T; J. LOGKWOOD. GUN LOOK.

No. 468,002. v Patented Feb. 2, 1892-.-

llllhimllilllllillt plied to a hammerless gun.

UNITED STATES PATENT OFFICE.

THOMAS J. LOOKWVOOD, OF MUNCIE, INDIANA.

GUNj-LOCK.

SPECIFICATION forming part of Letters Patent No. 468,002, dated February2, 1 892. Application filed August 2, 1890. Serial No. 360,754. (ModeL)I To all whom, it may concern.-

Be it known that I, THOMAS J. LooKwooD,

of Muncie, in the county of Delaware and State of Indiana, have inventedcertain new and useful Improvements in Gun-Locks; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, in which likeletters and figures refer to like parts. My invention relates to theconstruction of locks for double-barrel guns; and it consists in theconstruction and arrangement of the several parts so that either triggermay operate either lock independently or both locks successively ofeither barrel, and is applicable both to the ordinary hammer-gun and thehammerless gun, and will be understood from the following description.

In the drawings, Figure 1 is a side view of a part of the stock with oneof the locks re' moved, showing the interior mechanism of the other lockand the oscillating lever. Fig. 2 is a top view of my device, showingboth locks inplace, the upper plate of the case and hammers beingremoved. Fig. 3 is a detail side view of the sear andtumbler mechanism.Fig. 4 is a detail view, slightly enlarged, of the divided sear. Fig. 5is a side View similar to Fig. l of my device as ap Fig. 6 is a sideview of av modification of the mechanism shown in Fig. 5, wherein theoscillating lever operates directly upon the triggers instead of uponthe sears. Fig. 7 is a rear end view of a part of Fig. 6. Fig. 8 is atop view of a modified form of the oscillating lever and its connectionswherein it is possible to discharge either barrel with the same trigger,only lifting one sear instead of both.

In detail, c is the lock-casing, which is connected to the stock in theusual manner.

h are the hammers, Z the lever which looks the breech, and b the barrel.

8 p is the lock-spring,whioh is loop-shaped, its upper arm bearing uponthe pivot 12,0011- nected to thedog 11, which is pivoted at 10 to thetumbler 8. The lower end of the spring rests upon the tongue 16 of thefront part 5 of the sear. This sear is formed in two parts, as shown inFig. 4, pivotally united at 7 bya screw that passes through the lowerend of I the bridle b. The rear part of the sear s has a recess 17, inwhich the tongue l6of the part 8 enters.

b is the bridle which confines the tumbler, as shown in Fig. 3, and 9 isa pawl or dog rigidly mounted on the inner end of the screw-pin p,whichpasses through the hammer and the tumbler, and as the hammer is raisedthe point of this dog 9 moves in an opposite direction and is so locatedas to bear against a shoulder 5 on the side of the oscillating lever 0.One form of this lever is shown in Figs. 1 and 2,its upper endformingastirrup s 25, having slots above and below, through which passes aguide-pin 3, threaded to enter the block 6, upon which the oscillatinglever rests, this block being formed integral with the base of thecasing c.

1 and 2 are small springs, whose outer ends fit into notches inprojections on' the end of the oscillating lever 0. The opposite end ofthese springs (which may be formed in one piece, as shown in Fig. 2) areheld in place by a slot in the pin 14, which is connectedto the frontend of the block 6. The opposite end of the lever 0 is notched, formingtwo short arms 18, which are adapted to enter corresponding notches inthe end of the sears s s, and when in this position (shown in Fig. 2)the lever 0 is inoperative.

t t are the triggers, pivoted to the block 6 and having rearprojections, which are adapted to press upon the inner end of the scars.When the hammers are down, by pulling the trigger on either side itssear is raised, its notch passing up astride of the arm 18 of theoscillating lever, and no effect is produced upon the latter, as thesear in that case rests directly upon the longer arm 19 of this lever, anotch being formed between the arms 18 and 19 on each side to admit thesear, as shown in Fig. 1. When the hammer is cocked or thrown up, thetang or lower end of the pawl 9 is thrown forward, as shown in dottedlines in Fig. 3, engaging with the shoulder 5 of the oscillating lever,and this causes a rotary movement of the lever about the guidepin 3,swinging its inner end toward the lockspring and causing its upper arm18 to rest directly upon the inner shank of the sear, as shown in thedotted lines in Fig. 2. Upon pulling the trigger the pressure of thepawl IOO 9 is removed from the shoulder of the oscillating lever, andthe pressure of the spring 1 tends to throw the lever back, oscillatingabout its guide-pin, and the upper arm 18 is thrown away from thelock-spring, and, falling into the notch of the sear,drops down out ofthe way.

So far I have been speaking of the movement of the parts when theforward trigger t, which is normally adapted to operate the right-handhammer, is pulled. Of course it will be understood that a similar lockis on each side of the casing and is similarly adapted to engage withthe oscillating lever -0. In such case, when the left-hand hammer israised, the pawl 9 on that side bears against the corresponding shoulder5 and the lever oscillates in an opposite direction toward the way. Wheneither hammer is thrown back,

the dog .9 of the sear engages with a notch formed in the edge of the.tumbler 8 in the usual manner and looks it in position.

Heretofore the sear has been formed of a single piece. In other words,it has been solid from the rear to the front end. A sear of this kindwould not operate with the oscillating lever 0 when constructed andapplied in the manner just described, because upon raising either hammerthe oscillating lever is so shifted as to lock both scars in position,and-the raising of the other hammer would neutralize this result,shifting the lever and releasing the sear on the opposite side, thusdischarging that barrel. It will therefore be readily seen that wheneither hammer is raised the lever o is shifted by that operation andboth sears are locked, because the arms 18-.of the lever are thrown overupon the shank of each sear, and no matter which of the triggers ispulled it will operate the sear upon that side, and, through itsconnection, operate the opposite side also, discharging the barrel whosehammer is cooked. When both hammers are raised, the oscillating lever isbrought back to the center in the position shown in Fig. 2, being in thesame position aswhen both hammersare down, and the lever is theninoperative and each t i r will operate its own hammer independent ofthe other. It therefore becomes necessary for mein using a lever of theshape shown in Figsl and 2 to divide the sear into two. parts, so thatthe dog or point 5: of the sear may have a slight movement independentof its shank, which is operated by the trigger, and this independentmovement of the point 5 of the searvwill allow the raising of the hammerwithout operating the inner rear end of the sear, and thus actuating theoscillating lever to discharge the opposite barrel.

Where the hammers are concealed, or in that class of guns commonlycalled hammerless guns, a slight modification of the shape 1 instead ofbehind them, as shown in Figs. 1 and They may, however, be releasedseparately by pulling either trigger, the sameas i in the hammer-gun,and in the manner hereinhefore described. either trigger will actuateeither lock separately or both locks successively Whether the gun he ofthe one pattern or of the other, the

It will thus be seen that only advantage of having two triggers beingthat where the barrels are of a different bore it gives the operator achoice of which barrel 4 he will fire first.

In Figs. 6 and 7 I show a modification of;

the mechanism whereby the end of the lever jo, instead of operating uponthe end of the jsears, engages directly in notches 21, formed :inprojections on the upper part of the trigi gers, so that the connectionbetween the oscillating lever and the trigger is direct instead ofthrough the sear. of either hammer shifts the lever to one side, thesame as before-projections 20, formed on ithe end of the lever, (shownin Fig. 7,) enter- ,ing notches 21 in the upper end of the triggers, asshown in Fig. 6, thus locking both triggers by the operation, and thepulling of either trigger will discharge the barrel, and when bothhammers are raised or when both are down the oscillating lever is notengaged with either trigger, the parts being in the position shown inFig. 7. In this figure the projections 20 on the oscillating lever takethe "place of the arms 18and 19 (shown in Figs. 1 and-2) and the sears ss are shown in p0- tsition'directly over the triggers, and when eitherhammer is raised the oscillating lever .is shifted to the opposite side,the projections 20 engaging the notches 21 in both triggers.

In this case the cooking In the .case of the hammerless gun, inasimuchas both hammers are cooked by the same operation the lever o is theninoperative, being in the position shown in Fig. 7,

and each trigger will then operate its own look; but soon asone triggeris discharged the pressure ofthe spring upon the opposite side shiftsthe lever, its projections 20 entering the notches 21 in the upper endsof the ger that has been pulled and again pulling.

it itwill discharge the opposite barrel in the same manner as where thelever operates directlyuponthe sears; r

In Fig. 8 I show a modified form of the lever 0, which may be also usedin either class of guns. Here the shank of the lever is .curved andbears against the under side of position shown in Fig. 8, which is itsnormal position, but, it still being over the trigger t, the pulling ofthat trigger produces no effect upon the left-hand sear. Consequentlythe barrel on that side will not be discharged. Indeed, the left-handtrigger will never operate the right-hand barrel; but it will operatethe barrel on its own side in any position, thus giving the operator, asbefore, a choice of which barrel he will fire first. Now if theright-hand -trigger t be pulled when both hammers are raised, the partsbeing in the position shown in-Fig. 8, the right-hand hammer will bethrown down and the barrel discharged, and the pressure on the shoulder5 on that side being released the pull of the opposite spring oscillatesthe lever, throwing it under the left-hand sear s and freeing it fromthe sear s, and the lever 0 being still over the right-hand trigger apull upon the latter will then discharge the left-hand barrel. If thelever 0 have its shank curved to the left, then the operation abovedescribed will be in reverse orderthat is, the righthand trigger willoperate only its own barrel,

while the left-hand trigger willoperate' both barrels successively, ofcourse firing its own barrel first. In using this form of the leverforthe hammerless gun the springs 1 and 2 will be set back of theshoulders 5, as shown in Fig. 5. The object of this'form of lever is toprevent the operationof both sears by the pulling of a single trigger,thus avoiding in such movement the combined pressure of both springs.

In the form of lever shown in Figs. 6. and 7, where it acts directlyupon the triggers, a divided or jointed sear is unnecessary, and thisistrue also of the form of lever shown in Fi 8.

It is entirely practicable, instead of making the pawl 9 and the tumbler8 in separate form of device herein shown and described, provided theprinciple of my invention be not departed from.

It should be added that when both hammers are raised the pressure of thepawls 9 on the shoulders 5 is equal on both sides, and this forces thelever o bodily forward against the pressure of the springs 1 and 2, andthe slots 4 in the arms of the stirrup s fallow this forward movement.Of course in the hammer- When the hammers are thrown down, the action ofthe spring reverses this movement.

carrying the lever bodily back to its former place. The two positions ofthe guide-pin 3 in Figs. 5 and 6 illustrate this movement.

The slots 4 are made only wide enough to allow the free entrance of theguide-pin and the lateral up-and-down movement of the le- .ver withoutfriction, and yet so as to prevent any twisting movement of the lever,which would be the natural result when one of the scars is lifted,unless prevented by the sides of the stirrup, and to prevent this is themain object of the stirrup s t.

hat I claim as my invention, and desire to secure by Letters Patent, isthe following:

-1. In a gun, a double-lock'mechanism, a lever pivoted between thelocks, and means less gun this movement is backward instead of forward.

whereby the cocking of either hammer shifts the lever into connectionwith both sears, substantially as described.

2. In a gun, a double-lock mechanism, a pivoted lever normallyspring-balanced between the locks, and operative means between thehammers and the lever whereby the cocking.

of either hammer shifts the lever into connection with both sears,substantially as described.

3. In a gun, a double-lock mechanism, a

pivoted lever normally-spring-balanced be-.

tween the locks, the rear end of such lever having twohorizontally-slotted prongs thereon, shoulders on either side of suchlever in front of its pivot, andlugs on the hammertumblers which impingeon the respective shoulders on the lever during the cooking movement,and flat-sears which register with the slots on the prongs'of such leverwhen either hammer iscocked, substantially as shown and described.

4. In a gun, a double-lock mechanism, a pivthe locks, its slotted endengaging with the sears on each side when either hammer is cocked, andlugs connected to the opposite end of such lever for contacting with thehammers when the latter are raised, whereby the pressure of eithertrigger on its sear will operate its own hammer separately and bothhammers successively, substantially as shown I 20 oted lever normallyspring-balanced between raised, the opposite end of such lever havingslotted prongs thereon, and sears Connected to thelocks, which registerwith the slots on the prongs of such lever when either hammer is cooked,substantially as shown and described.

6. In a gun, a double-lock mechanism, a pivoted lever normallyspring-balanced between thelocks, one end of such lever adapted tocontact with the hammer-tumblers during the cocking movement,the otherend of such lever provided with two slotted prongs, and scars whichregister wit-h the slots of the prongs of such lever when either hammeris cooked, substantially as shown and described.

7. In a gun, a doublelock mechanism, an oscillating pivoted levernormally spring-balanced between such locks, one end of such leverhaving two slotted prongs thereon,

shoulders on either side of such lever at the other end, lugs on thehammertumblers which impinge on the respective shoulders of the leverduring the cocking movement, and scars which register with 'the slots ofthe prongs of such lever when either hammer is cooked, substantially asshown and described.

8. In a gun, a double-lock mechanism, an oscillating pivoted levernormally spring-balanced between the locks, shoulders on either side ofsuch lever, atone end contacting with each hammer, respectively, whenthe latter is raised ,andsearslocated abovetheopposite end or" suchlever, engaging therewith when but one hammer is cocked and free fromsuch lever when both hammers are cocked,whereby both sears maybe trippedsuccessively by a single trigger, substantially as shown and described.v

9. In a gun, a double-lock mechanism, a lever pivoted between suchlocks, and means whereby the cocking of either hammer shifts the leverinto connection .withboth triggers, substantially as shown anddescribed.

10. In a gun, a double-lock mechanism, a pivoted lever normallyspring-balanced between the locks, and operative means between thehammers and the lever whereby the cocking of either hammer shifts thelever into position to be operated upon by either trigger,

. substantially as shown and described.

11. In a gun, a double-lock mechanism, a pivoted lever normallyspring-balanced between the locks, one end of such lever contacting withthe hammers when the latter are both raised, its opposite end locatedabove a single trigger and beneath its sear, whereby the pressure ofsuch trigger on the lever will 'tri p both sears successively,substantially as described.

12. In a gun, a double-lock mechanism, a pivoted lever normally balancedbetween the locks, sears formed of two parts hinged together, and meanswhereby the cocking of either hammer shifts the lever into connectionwith both the sears, substantially as shown and described.

13. In a gun, a d0nble-l0ck mechanism, a

'pivoted lever normally balanced between the locks, sears formed of twoparts hinged together, whereby the dog is allowed a move- .mentindependent of its shank, and means whereby the cocking of either hammershifts the lever into connection with both thesears,

substantially as described.

14. In a gun-lockmechanism,asear formed of two parts hinged together atthe pivotal

